Problem related exiting the thread

[raghvendramisra]

Hi everyone,

I am calling a Qthread in my application by pressing a pushbutton and i am killing the thread by pressing another button.(I have give a->terminate() & a->wait() ) in my stop button.

now i was debugging a problem so used gdb to debugg. The program worked fine but when i pressed the stop button the gdb showed : Received signal SIG32......Real Time Signal32......."

plz can ne one tell me what does this mean. Once this message comes the i have to force quit my application.

Regards
Raghvendra

[^NyAw^]

Hi,

Using "terminate" is not a good solution. It will KILL the thread. What you have to use is a boolean variable that is always true and when you click the pushButton you set it to false(in the run() metod):

MyThread::setRunning(bool bRunning)
{
  m_bRunning = bRunning;
}
 
MyThread::run()
{
  while (m_bRunning)
  {
    .... //work
  }
}

MyThread::setRunning(bool bRunning)
{
  m_bRunning = bRunning;
}

MyThread::run()
{
  while (m_bRunning)
  {
    .... //work
  }
}

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When you set "m_bRunning" to false, the loop gets out, then, the "wait()" method will return.

MyApp::on_StopButton_clicked()
{
  pMyThread->setRunning(false);
  pMyThread->wait();  //Here the application will wait until the Thread gets out of "run()".
}

MyApp::on_StopButton_clicked()
{
  pMyThread->setRunning(false);
  pMyThread->wait();  //Here the application will wait until the Thread gets out of "run()".
}

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